Zobrazeno 1 - 10
of 12 999
pro vyhledávání: '"A Leonov"'
Autor:
Leonov, I. V.
Using \emph{ab initio} band structure and DFT+dynamical mean-field theory methods we examine the effects of electron-electron interactions on the electronic structure, magnetic state, and structural phase stability of the recently discovered double-l
Externí odkaz:
http://arxiv.org/abs/2410.15298
Autor:
Leonov, Andrey O.
I revisit the well-known structural transition between hexagonal and square skyrmion lattices induced by increasing easy-plane anisotropy in quasi-two-dimensional chiral magnets. I show that the hexagonal skyrmion order, by the first-order phase tran
Externí odkaz:
http://arxiv.org/abs/2409.01528
Autor:
Gaifutdinov, G. M., Leonov, I. V.
Using the DFT+dynamical mean-field theory method we revisit the pressure-temperature phase diagram of the prototypical correlated insulator NiO. We study the pressure-induced evolution of the electronic structure, magnetic state, and exchange couplin
Externí odkaz:
http://arxiv.org/abs/2408.13937
Autor:
Leonov, Andrey O.
I revisit the well-known phase transition between the hexagonal skyrmion lattice and the homogeneous state within the phenomenological Dzyaloshinskii theory for chiral magnets which includes only the exchange, Dzyaloshinskii-Moriya and Zeeman energy
Externí odkaz:
http://arxiv.org/abs/2408.09623
Autor:
Leonov, I. V.
Publikováno v:
Phys. Rev. B 110, 045126 (2024)
We report a theoretical study of the effects of electronic correlations, magnetic properties, and chemical bonding in the recently synthesized high-pressure orthorhombic phase of FeN$_2$ using the DFT+dynamical mean-field theory approach. Our analysi
Externí odkaz:
http://arxiv.org/abs/2407.16783
Autor:
Leonov, Aleksei, Zakharov, Aleksei, Koshelev, Sergey, Pisov, Maxim, Kurmukov, Anvar, Belyaev, Mikhail
Automatic ribs segmentation and numeration can increase computed tomography assessment speed and reduce radiologists mistakes. We introduce a model for multilabel ribs segmentation with hierarchical loss function, which enable to improve multilabel s
Externí odkaz:
http://arxiv.org/abs/2405.15500
Autor:
Leonov, A. S.
We consider the solution of systems of linear algebraic equations (SLAEs) with an ill-conditioned or degenerate exact matrix and an approximate right-hand side. An approach to solving such a problem is proposed and justified, which makes it possible
Externí odkaz:
http://arxiv.org/abs/2405.04399
Autor:
Nakamura, Kaito, Leonov, Andrey O.
We re-examine the internal structure of skyrmioniums stabilized in quasi-two-dimensional chiral magnets with easy-axis uniaxial anisotropy. Skyrmioniums are particle-like states of two nested skyrmions with opposite polarities contributing to zero to
Externí odkaz:
http://arxiv.org/abs/2404.10189
Autor:
Leonov, I. V.
Publikováno v:
Phys. Rev. B 109, 235123 (2024)
It has been recently shown that under pressure trilayer Ruddlesden-Popper nickelate La$_4$Ni$_3$O$_{10}$ (LNO) becomes superconducting below a critical temperature $\sim$20 K, in addition to the infinite-layer and bilayer systems. Motivated by this o
Externí odkaz:
http://arxiv.org/abs/2401.07350
Publikováno v:
JETP Letters 118, 886 (2023)
We report a theoretical study of the effects of electron correlations and structural confinement on the electronic properties and magnetic state of LaNiO3 (LNO) thin films epitaxially deposited on the (001) LaAlO3 (LAO) substrate. Using the DFT+U met
Externí odkaz:
http://arxiv.org/abs/2310.07705